diff --git a/Gemfile.lock b/Gemfile.lock
index 538f38e..478600c 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -194,7 +194,7 @@ GEM
     pry-byebug (3.3.0)
       byebug (~> 8.0)
       pry (~> 0.10)
-    rack (1.6.4)
+    rack (1.6.12)
     rack-accept (0.4.5)
       rack (>= 0.4)
     rack-contrib (1.4.0)